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1. 发明授权

US08184201B2 Method and apparatus for automatic audio standard detection in terrestrial broadcast signals employing frequency scanning 有权
标题翻译：使用频率扫描的地面广播信号中的自动音频标准检测方法和装置
公开(公告)号：US08184201B2
公开(公告)日：2012-05-22
申请号：US11934783
申请日：2007-11-04
申请人： Amogh D. Thaly , Srikanth Alaparthi , Sudheesh A. Somanathan
发明人： Amogh D. Thaly , Srikanth Alaparthi , Sudheesh A. Somanathan
IPC分类号： H04N7/00 , H04N5/60 , H04N11/00 , H04N5/46 , H04N5/14 , H04N5/44
CPC分类号： H04R5/04 , H04N21/439 , H04R2499/15
摘要： A method and apparatus for automatic audio standard detection in terrestrial broadcast signals is disclosed. In one embodiment, a method of detecting automatic audio standard for terrestrial broadcast includes scanning for each known audio frequency standard of interest in a current band energy spectrum in an incoming broadcast signal using a standard of non standard energy estimation algorithm, such as Goertzel DFT or FFT based algorithm for a predetermined time interval. At each known audio frequency standard of interest, energy is computed using the associated standard or non standard energy estimation algorithm within the predetermined time interval. The computed energy at each known audio frequency standard of interest is then compared to predetermined threshold energy. At each known audio frequency standard of interest, it is determined whether the audio frequency standard of interest is detected based on the outcome of the comparison.
摘要翻译：公开了一种用于地面广播信号中的自动音频标准检测的方法和装置。在一个实施例中，一种检测用于地面广播的自动音频标准的方法包括使用标准的非标准能量估计算法（例如，Goertzel DFT或者DFT）扫描传入广播信号中的当前频带能谱中的每个已知音频标准基于FFT的算法预定时间间隔。在感兴趣的每个已知的音频标准下，在预定的时间间隔内使用关联的标准或非标准的能量估计算法来计算能量。然后将感兴趣的每个已知音频标准处的计算能量与预定阈值能量进行比较。在感兴趣的每个已知的音频标准中，基于比较的结果确定是否检测到感兴趣的音频标准。

2. 发明申请

US20090115896A1 METHOD AND APPARATUS FOR AUTOMATIC AUDIO STANDARD DETECTION IN TERRESTRIAL BROADCAST SIGNALS 有权
标题翻译：陆地广播信号自动音频标准检测方法与装置
公开(公告)号：US20090115896A1
公开(公告)日：2009-05-07
申请号：US11934783
申请日：2007-11-04
申请人： Amogh D. Thaly , Srikanth Alaparthi , Sudheesh A. S.
发明人： Amogh D. Thaly , Srikanth Alaparthi , Sudheesh A. S.
IPC分类号： H04N7/52
CPC分类号： H04R5/04 , H04N21/439 , H04R2499/15
摘要： A method and apparatus for automatic audio standard detection in terrestrial broadcast signals is disclosed. In one embodiment, a method of detecting automatic audio standard for terrestrial broadcast includes scanning for each known audio frequency standard of interest in a current band energy spectrum in an incoming broadcast signal using a standard of non standard energy estimation algorithm, such as Goertzel DFT or FFT based algorithm for a predetermined time interval. At each known audio frequency standard of interest, energy is computed using the associated standard or non standard energy estimation algorithm within the predetermined time interval. The computed energy at each known audio frequency standard of interest is then compared to predetermined threshold energy. At each known audio frequency standard of interest, it is determined whether the audio frequency standard of interest is detected based on the outcome of the comparison.
摘要翻译：公开了一种用于地面广播信号中的自动音频标准检测的方法和装置。在一个实施例中，一种检测用于地面广播的自动音频标准的方法包括使用标准的非标准能量估计算法（例如，Goertzel DFT或者DFT）扫描传入广播信号中的当前频带能谱中的每个已知音频标准基于FFT的算法预定时间间隔。在感兴趣的每个已知的音频标准下，在预定的时间间隔内使用关联的标准或非标准的能量估计算法来计算能量。然后将感兴趣的每个已知音频标准处的计算能量与预定阈值能量进行比较。在感兴趣的每个已知的音频标准中，基于比较的结果确定是否检测到感兴趣的音频标准。

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